Use the given data to find the equation of the regression line.
Examine the scatterplot and identify a characteristic of the data
that is ignored by the regression line.
x 9 7 11 10 12 13 5 4 12 8 6
y 7.11 6.49 13.14 7.35 8.03 8.77 5.83 5.56 7.91 6.56 5.49
Create a scatterplot of the data. Choose the correct graph
below.
A. 0 5 10 15 20 25
0 5 10 15 20 25
xy
A scatterplot has a horizontal x-scale from 0 to 25 in intervals
of 5 and a vertical y-scale from 0 to 25 in intervals of 5. Eleven
points are plotted with approximate coordinates as follows: (9, 7.11);
(7, 6.49); (11, 13.14); (10, 7.35); (12, 8.03); (13, 8.77); (5, 5.83);
(4, 5.56); (12, 7.91); (8, 6.56); (6, 5.49).
B. 0 5 10 15 20 25
0 5 10 15 20 25
xy
A scatterplot has a horizontal x-scale from 0 to 25 in intervals
of 5 and a vertical y-scale from 0 to 25 in intervals of 5. Eleven
points are plotted with approximate coordinates as follows: (7, 9);
(6.5, 7); (13, 11); (7.5, 10); (8, 12); (9, 13); (6, 5); (5.5, 4);
(8, 12); (6.5, 8); (5.5, 6).
C. 0 5 10 15 20 25
0 5 10 15 20 25
xy
A scatterplot has a horizontal x-scale from 0 to 25 in intervals
of 5 and a vertical y-scale from 0 to 25 in intervals of 5. Eleven
points are plotted with approximate coordinates as follows: (4, 6.5);
(5, 6); (6, 6.5); (7, 8); (8, 9); (9, 13); (10, 8); (11, 5.5);
(12, 7); (12, 7.5); (13, 5.5).
D. 0 5 10 15 20 25
0 5 10 15 20 25
xy
A scatterplot has a horizontal x-scale from 0 to 25 in intervals
of 5 and a vertical y-scale from 0 to 25 in intervals of 5. Eleven
points are plotted with approximate coordinates as follows: (9, 7);
(7, 6.5); (11, 13); (10, 7.5); (12, 8); (13, 9); (5, 6); (4, 5.5);
(12, 8); (8, 6.5); (6, 5.5).
Find the equation of the regression line.
y = nothing + nothingx
(Round the constant to two decimal places as needed. Round the
coefficient to three decimal places as needed.)
Identify a characteristic of the data that is ignored by the
regression line.
A. There is an influential point that strongly affects the
graph of the regression line.
B. There is no characteristic of the data that is ignored
by the regression line.
C. The data has a pattern that is not a straight line.
D. There is no trend in the data.